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Of all the air passengers in the world, 40% fly on aeroplanes registered in the United States. These flights are both domestic and international. In the year 2000 there were 1.6 billion aircraft passengers. In these statistics, every time a person takes a flight, they are counted as an aircraft passenger. Some people are passengers many times in a year so far fewer than 1.6 billion individual people fly in a year. |
"... most of the world’s cities are now within 36 hours of each other ...” Peter Haggett, 2001 |
Territory size shows the proportion of worldwide aircraft passengers flying on aircraft registered there.
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All of the data we use is estimated; 
Open Population Map for comparison